Learn why your Solis inverter displays a NO-GRID error and how to troubleshoot it effectively.
The NO-GRID message indicates that the inverter is not detecting a connection to the utility grid. This can occur due to various reasons, including a tripped breaker or grid outage.
You can verify if the grid is down by checking with your utility provider or by inspecting other electrical devices in your home to see if they are functioning.
The 'NO-GRID' error occurs when the inverter fails to detect a valid utility grid connection. This could result from the inverter's internal logic monitoring grid voltage and frequency. The inverter continuously checks grid parameters; if these deviate from acceptable thresholds—typically 60 Hz frequency and voltage within specified limits—it triggers a fault. Additionally, the inverter performs insulation resistance checks (RISO); if it senses inadequate insulation, it may also disconnect to prevent potential hazards.
The Solis inverter displays a 'NO-GRID' error message, indicated by an LED pattern showing a steady red light. The monitoring app may also alert the user to a loss of grid connection. The system may show a significant drop in power production, often dropping to zero despite sunlight availability.
Always consult a licensed electrician or certified solar installer when troubleshooting or performing maintenance on solar systems to ensure compliance with safety standards and local codes.